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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Konigsberg, W. Rosenberg, L. E. Kalousek, F. Kraus, J. P. Horwich, A. L. Williams, K. |
| Abstract | Ornithine transcarbamoylase is a mitochondrial matrix enzyme composed of three identical subunits encoded on the X chromosome. The subunit is synthesized on cytoplasmic polysomes as a precursor that is cleaved during transport into mitochondria. We report here the isolation and characterization of cDNA clones containing sequences corresponding to the mRNA encoding the ornithine transcarbamoylase subunit. cDNA was synthesized using rat liver mRNA enriched by polysome immunoadsorption for the low-abundance messenger species encoding the enzyme subunit. After insertion of cDNA into plasmid pBR322 and cloning in Escherichia coli, identification of the desired plasmids was accomplished by (i) differential colony hybridization using cDNA probes synthesized from mRNA of various tissues; (ii) differential blot hybridization using cDNA probes synthesized from mRNA enriched for or depleted of the ornithine transcarbamoylase message; (iii) hybrid-selected translation assays; and (iv) most definitively, structural analysis, which matched 25 consecutive amino acid residues determined by sequential Edman analysis of the carboxyl-terminal portion of the purified enzyme subunit with coding sequence present in the insert of one of the plasmids. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 14 |
| Volume Number | 80 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1983-09-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Brain Enzymology Cloning, Molecular DNA Metabolism Genes Liver Ornithine Carbamoyltransferase Genetics Amino Acid Sequence Animals Nucleic Acid Hybridization Plasmids Protein Biosynthesis RNA, Messenger Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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